Get Hip to the Data Acquisition Scene: Principles of Digital Signal Recording Use of the term “digital” has become ubiquitous. But what does it mean for a device to be “digital”? Computers process information by manipulating numbers (digits), and are therefore often referred to as digital systems. When the term “digital” is used to describe a device, the implication is that a ... Article
Article  |   July 01, 2010
Get Hip to the Data Acquisition Scene: Principles of Digital Signal Recording
Author Affiliations & Notes
  • Donald S. Finan
    Audiology and Speech-Language Sciences, University of Northern Colorado, Greeley, CO
Article Information
Speech, Voice & Prosodic Disorders / Voice Disorders / Hearing & Speech Perception / Acoustics / Special Populations / Genetic & Congenital Disorders / Attention, Memory & Executive Functions / Speech, Voice & Prosody / Articles
Article   |   July 01, 2010
Get Hip to the Data Acquisition Scene: Principles of Digital Signal Recording
SIG 5 Perspectives on Speech Science and Orofacial Disorders, July 2010, Vol. 20, 6-13. doi:10.1044/ssod20.1.6
SIG 5 Perspectives on Speech Science and Orofacial Disorders, July 2010, Vol. 20, 6-13. doi:10.1044/ssod20.1.6

Use of the term “digital” has become ubiquitous. But what does it mean for a device to be “digital”? Computers process information by manipulating numbers (digits), and are therefore often referred to as digital systems. When the term “digital” is used to describe a device, the implication is that a computer is somehow involved. MP3 or iPod music players are digital devices, in that a computer was used to convert music to a numeric (digital) format so that it could be stored on a digital memory chip. This article will explore how computers capture real-world signals (such as acoustic speech signals), and why computer (digital) signal acquisition has advantages over older “analog” recording technologies. This article also will present information on potential error that can arise when converting analog signals to the digital domain.

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